Ethyl 4-methyl-2-(methylamino)-1,3-thiazole-5-carboxylate

ethyl 2-chloro-2-[(3-methylphenyl)hydrazinylidene]acetate

乙基3-肼基-5-甲基-1H-吡唑-4-羧酸酯

ethyl 2-chloro-2-[(3-chlorophenyl)hydrazinylidene]acetate

3-甲基-5,6-二氢咪唑[2,1-B][1,3]噻唑-2-羧酸盐酸盐